Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES) Lanthanoid ion which is most likely to be reduced by Cr(+II) is - Sarthaks eConnect

Lanthanoid ion which is most likely to be reduced by Cr(+II) is :

All of these

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All of them on being reduced will get either stable half filled orbitals or stable completely filled orbitals.